Closed for the following reason
the question is answered, right answer was accepted by
Frank
close date 2016-09-08 09:14:07.286838

1 answer

When a contact clicks through an affiliate link, their browser is "cookied". These "cookies" are tracked when the contact submits through a Smart Form/Order Form. Upon submission of the form, either First or Last Referrer will be updated.

Assuming the contact is not already in the system, both the First and Last will update. If they are already in the system, only the Last Referrer will update.

First referrer means that when a sale get made, the very first person whose link got clicked will get the commission, no matter how many other Partner's links got clicked in the interim. Last referrer means that the Partner link that was clicked last, or most recently, gets paid.